Two Hours Before Neptune  

Two hours before closest approach to Neptune in 1989, the Voyager 2 robot spacecraft snapped this picture. Clearly visible for the first time were long light-colored cirrus-type clouds floating high in Neptune’s atmosphere. Shadows of these clouds can even be seen on lower cloud decks. Most of Neptune’s atmosphere is made of hydrogen and helium, which is invisible. Neptune’s blue color therefore comes from smaller amounts of atmospheric methane, which preferentially absorbs red light. Neptune has the fastest winds in the Solar System, with gusts reaching 2000 kilometers per hour. Speculation holds that diamonds may be created in the dense hot conditions that exist under the clouds-tops of Uranus and Neptune.


Credit:  Voyager 2, NASA

Two Hours Before Neptune

Two hours before closest approach to Neptune in 1989, the Voyager 2 robot spacecraft snapped this picture. Clearly visible for the first time were long light-colored cirrus-type clouds floating high in Neptune’s atmosphere. Shadows of these clouds can even be seen on lower cloud decks. Most of Neptune’s atmosphere is made of hydrogen and helium, which is invisible. Neptune’s blue color therefore comes from smaller amounts of atmospheric methane, which preferentially absorbs red light. Neptune has the fastest winds in the Solar System, with gusts reaching 2000 kilometers per hour. Speculation holds that diamonds may be created in the dense hot conditions that exist under the clouds-tops of Uranus and Neptune.

Credit: Voyager 2, NASA


Posted 11 months ago with 283 notes
Tagged:AstronomyNeptunesciencevoyager 2space

  1. allasha reblogged this from spaceplasma
  2. newtgingpoor reblogged this from spaceplasma
  3. a-social-construct reblogged this from spaceplasma
  4. magicalschoolgirl reblogged this from lyeekha
  5. anarchicyellowdungarees reblogged this from lyeekha
  6. lyeekha reblogged this from adeedmondson
  7. p0pitandlockit reblogged this from adeedmondson
  8. f-fatigue reblogged this from adeedmondson
  9. pikachu-intheshower reblogged this from adeedmondson
  10. adeedmondson reblogged this from shakeoffyourflesh
  11. shakeoffyourflesh reblogged this from leprintemps
  12. yakmanistan reblogged this from spaceplasma
  13. leprintemps reblogged this from rememo
  14. jryanm reblogged this from starstuffblog
  15. glittersleep reblogged this from petepushpin
  16. clovesmokex reblogged this from spaceplasma
  17. verybluebirdy reblogged this from space-tart
  18. vitreous-obsidian reblogged this from l-s-d-m-t-h-c
  19. l-s-d-m-t-h-c reblogged this from spaceplasma
  20. thestationmanager reblogged this from galaxyclusters
  21. driffftttt reblogged this from starstuffblog
  22. enemyforsale reblogged this from spaceplasma
  23. dinosaurninjaswithrainbowarms reblogged this from starstuffblog
  24. aimlessinspace reblogged this from starstuffblog
  25. patrick42h reblogged this from starstuffblog